Nova-T 500 crashing

[dualboot]

Recently installed Ubuntu 18 LTS. I've deleted the "dvb-usb-dib0700-1.20.fw" firmware file from /var/lib/firmware after reading that that was a common problem (albeit on older systems)

I'm going to paste the whole of an output of 'dmseg -T' in a separate post below in case it is of use but I will pick out a couple of things I'm concerned bout below...

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[Fri May 11 19:45:57 2018] Registered IR keymap rc-dib0700-rc5
[Fri May 11 19:45:57 2018] rc rc0: Hauppauge Nova-T 500 Dual DVB-T as /devices/pci0000:00/0000:00:1c.5/0000:02:00.0/0000:03:00.2/usb3/3-1/rc/rc0
[Fri May 11 19:45:57 2018] input: Hauppauge Nova-T 500 Dual DVB-T as /devices/pci0000:00/0000:00:1c.5/0000:02:00.0/0000:03:00.2/usb3/3-1/rc/rc0/input18
[Fri May 11 19:45:57 2018] dvb-usb: schedule remote query interval to 50 msecs.
[Fri May 11 19:45:57 2018] dvb-usb: Hauppauge Nova-T 500 Dual DVB-T successfully initialized and connected.
[Fri May 11 19:45:57 2018] usbcore: registered new interface driver dvb_usb_dib0700
[Fri May 11 19:45:57 2018] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
[Fri May 11 19:45:57 2018] atl1c 0000:04:00.0: atl1c: enp4s0 NIC Link is Up<1000 Mbps Full Duplex>
[Fri May 11 19:45:57 2018] kauditd_printk_skb: 32 callbacks suppressed
[Fri May 11 19:45:57 2018] audit: type=1400 audit(1526064358.043:43): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=1053 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[Fri May 11 19:45:57 2018] audit: type=1400 audit(1526064358.099:44): apparmor="DENIED" operation="capable" profile="/usr/sbin/mysqld" pid=1053 comm="mysqld" capability=2  capname="dac_read_search"
[Fri May 11 19:45:57 2018] audit: type=1400 audit(1526064358.179:45): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=1120 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=122 ouid=0
[Fri May 11 19:52:51 2018] rfkill: input handler disabled
[Fri May 11 20:22:13 2018] usb 3-1: USB disconnect, device number 2
[Fri May 11 20:22:13 2018] mt2060 I2C write failed
[Fri May 11 20:26:09 2018] INFO: task kworker/6:2:718 blocked for more than 120 seconds.
[Fri May 11 20:26:09 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Fri May 11 20:26:09 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri May 11 20:26:09 2018] kworker/6:2     D    0   718      2 0x80000000
[Fri May 11 20:26:09 2018] Workqueue: usb_hub_wq hub_event
[Fri May 11 20:26:09 2018] Call Trace:
[Fri May 11 20:26:09 2018]  __schedule+0x297/0x8b0
[Fri May 11 20:26:09 2018]  schedule+0x2c/0x80
[Fri May 11 20:26:09 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Fri May 11 20:26:09 2018]  ? wait_woken+0x80/0x80
[Fri May 11 20:26:09 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Fri May 11 20:26:09 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Fri May 11 20:26:09 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Fri May 11 20:26:09 2018]  usb_unbind_interface+0x77/0x290
[Fri May 11 20:26:09 2018]  device_release_driver_internal+0x15b/0x220
[Fri May 11 20:26:09 2018]  device_release_driver+0x12/0x20
[Fri May 11 20:26:09 2018]  bus_remove_device+0xec/0x160
[Fri May 11 20:26:09 2018]  device_del+0x13d/0x360
[Fri May 11 20:26:09 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Fri May 11 20:26:09 2018]  usb_disable_device+0x9f/0x270
[Fri May 11 20:26:09 2018]  usb_disconnect+0xc6/0x270
[Fri May 11 20:26:09 2018]  hub_port_connect+0x7d/0xa90
[Fri May 11 20:26:09 2018]  hub_event+0x84e/0xb10
[Fri May 11 20:26:09 2018]  process_one_work+0x1de/0x410
[Fri May 11 20:26:09 2018]  worker_thread+0x32/0x410
[Fri May 11 20:26:09 2018]  kthread+0x121/0x140
[Fri May 11 20:26:09 2018]  ? process_one_work+0x410/0x410
[Fri May 11 20:26:09 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Fri May 11 20:26:09 2018]  ret_from_fork+0x35/0x40
[Fri May 11 20:27:15 2018] dvb-usb: error while stopping stream.
[Fri May 11 20:27:15 2018] mt2060 I2C write failed
[Fri May 11 20:27:15 2018] mt2060 I2C write failed
[Fri May 11 20:27:15 2018] mt2060 I2C write failed (len=1)
[Fri May 11 20:27:15 2018] mt2060 I2C write failed (len=5)
[Fri May 11 20:27:15 2018] mt2060 I2C read failed

many repeates of these mt2060 messages...

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[Fri May 11 20:28:10 2018] INFO: task kworker/6:2:718 blocked for more than 120 seconds.
[Fri May 11 20:28:10 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Fri May 11 20:28:10 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Fri May 11 20:28:10 2018] kworker/6:2     D    0   718      2 0x80000000
[Fri May 11 20:28:10 2018] Workqueue: usb_hub_wq hub_event
[Fri May 11 20:28:10 2018] Call Trace:
[Fri May 11 20:28:10 2018]  __schedule+0x297/0x8b0
[Fri May 11 20:28:10 2018]  schedule+0x2c/0x80
[Fri May 11 20:28:10 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Fri May 11 20:28:10 2018]  ? wait_woken+0x80/0x80
[Fri May 11 20:28:10 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Fri May 11 20:28:10 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Fri May 11 20:28:10 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Fri May 11 20:28:10 2018]  usb_unbind_interface+0x77/0x290
[Fri May 11 20:28:10 2018]  device_release_driver_internal+0x15b/0x220
[Fri May 11 20:28:10 2018]  device_release_driver+0x12/0x20
[Fri May 11 20:28:10 2018]  bus_remove_device+0xec/0x160
[Fri May 11 20:28:10 2018]  device_del+0x13d/0x360
[Fri May 11 20:28:10 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Fri May 11 20:28:10 2018]  usb_disable_device+0x9f/0x270
[Fri May 11 20:28:10 2018]  usb_disconnect+0xc6/0x270
[Fri May 11 20:28:10 2018]  hub_port_connect+0x7d/0xa90
[Fri May 11 20:28:10 2018]  hub_event+0x84e/0xb10
[Fri May 11 20:28:10 2018]  process_one_work+0x1de/0x410
[Fri May 11 20:28:10 2018]  worker_thread+0x32/0x410
[Fri May 11 20:28:10 2018]  kthread+0x121/0x140
[Fri May 11 20:28:10 2018]  ? process_one_work+0x410/0x410
[Fri May 11 20:28:10 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Fri May 11 20:28:10 2018]  ret_from_fork+0x35/0x40
[Fri May 11 20:28:21 2018] mt2060 I2C write failed (len=1)
[Fri May 11 20:28:21 2018] mt2060 I2C write failed (len=5)
[Fri May 11 20:28:21 2018] mt2060 I2C read failed
[Fri May 11 20:28:21 2018] mt2060 I2C read failed
[Fri May 11 20:28:21 2018] mt2060 I2C read failed

Not sure if the apparmor messages about mysql are critical ?

Please let me know if there is anything else that would be useful to check, or anything to try ?

Has anyone else got a Nova-T 500 working with Ubuntu 18 ?

[dualboot]

OK - so output was too big ! I'll wait to see if anyone has a suggestion as to what to try or look for....

[dualboot]

I did a shut down and power off at the mains, and it comlained on re-boot that it had no firmware so have re-instated the dvb-usb-dib0700-1.20.fw

I re-instated the firmware and another cold boot, and tuners are working again - I suspect it will die again - there are a load of recordings programmed in so I'll know by tomorrow.

I read somewhere about the second tuner going to sleep, but this is both tuners dead - the files it mentioned in the article do not exist in my build
/etc/modprob.d/options.conf

from https://linuxtv.org/wiki/index.php/Haup ... sb_dib0700

Can I just create the file and put the options in it ?

[PhilB]

Yes - I recall creating that file under 14.04 and earlier versions to get the lna low noise amplifier to work.
Don't forget to cold boot it afterwards.
Phil

[dualboot]

Cold reboot with options.conf file

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cat /etc/modprobe.d/options.conf 
options dvb-usb-dib0700 force_lna_activation=1
options usbcore autosuspend=-1

Tuners fine at first - let it record a 90 minute program which it did fine. The next scheduled recording was a 0920 hrs and was supposed to be 1hr long.
Tuner died 50 minutes in to the program (recording just stops)

mythbackend log shows the tuner is suddenly not existing

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May 12 10:08:23 quietpc mythbackend: mythbackend[1220]: I TVRecEvent tv_rec.cpp:3649 (TuningFrequency) TVRec[1]: TuningFrequency
May 12 10:08:23 quietpc mythbackend: mythbackend[1220]: E TVRecEvent recorders/dvbchannel.cpp:832 (Tune) DVBChan[1](/dev/dvb/adapter0/frontend0): Tune(): Setting Frontend tuning parameters failed.#012#011#011#011eno: No such device (19)
May 12 10:08:23 quietpc mythbackend: mythbackend[1220]: E TVRecEvent recorders/dtvchannel.cpp:311 (SetChannelByString) DTVChan[1](/dev/dvb/adapter0/frontend0): SetChannelByString(233): Tuning to frequency.
May 12 10:08:23 quietpc mythbackend: mythbackend[1220]: E TVRecEvent tv_rec.cpp:3727 (TuningFrequency) TVRec[1]: Failed to set channel to 233. Reverting to kState_None
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: I TVRecEvent tv_rec.cpp:1088 (HandleStateChange) TVRec[2]: Changing from RecordingOnly to None
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: N RecThread recorders/recorderbase.cpp:501 (FinishRecording) Finished Recording: Container: MPEG2-TS Video Codec: mpeg2video (544x576 A/R: 3 25fps) Audio Codec: mp2
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: I TVRecEvent tv_rec.cpp:863 (FinishedRecording) TVRec[2]: FinishedRecording(1021_2018-05-12T08:17:00Z) damaged recq:<RecordingQuality overall_score="0" key="1021_2018-05-12T08:17:00Z" countinuity_error_count="11" packet_count="2683751">#012    <Gap start="2018-05-12T09:00:28Z" end="2018-05-12T09:05:00Z" duration="271" />#012</RecordingQuality>
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: E CoreContext mainserver.cpp:1172 (customEvent) MainServer: PREVIEW_SUCCESS but no receivers.
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: I CoreContext scheduler.cpp:734 (UpdateRecStatus) Updating status for Castle on cardid [2] (Recording => Recorder Failed)
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: I Scheduler scheduler.cpp:2356 (HandleReschedule) Reschedule requested for CHECK -9 22 0 UpdateRecStatus2 | Castle |  | American crime drama. Castle and Beckett's plans for a romantic weekend in the Hamptons are ruined when a dying man stumbles into Castle's garden. (S5 Ep 4) | www.five.tv/v7rhe
May 12 10:10:00 quietpc mythbackend: mythbackend[1220]: I Scheduler scheduler.cpp:2469 (HandleReschedule) Scheduled 164 items in 0.1 = 0.00 match + 0.00 check + 0.05 place
May 12 10:10:01 quietpc mythbackend: mythbackend[1220]: I ProcessRequest mainserver.cpp:1738 (HandleAnnounce) MainServer: MainServer::ANN Monitor
May 12 10:10:01 quietpc mythbackend: mythbackend[1220]: I ProcessRequest mainserver.cpp:1743 (HandleAnnounce) MainServer: adding: quietpc(563afb2202a0) as a client (events: 0)
May 12 10:10:01 quietpc mythbackend: mythbackend[1220]: I ProcessRequest mainserver.cpp:1738 (HandleAnnounce) MainServer: MainServer::ANN Monitor
May 12 10:10:01 quietpc mythbackend: mythbackend[1220]: I ProcessRequest mainserver.cpp:1743 (HandleAnnounce) MainServer: adding: quietpc(7ff864003920) as a client (events: 1)

dmesg from the same time frame with a few lines either side to show context (0851hrs is around the time of the cold boot)

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$ dmesg -T | grep 12\ 10: -B 5 -A 10
[Sat May 12 08:51:39 2018] input: Hauppauge Nova-T 500 Dual DVB-T as /devices/pci0000:00/0000:00:1c.5/0000:02:00.0/0000:03:00.2/usb3/3-1/rc/rc0/input18
[Sat May 12 08:51:39 2018] dvb-usb: schedule remote query interval to 50 msecs.
[Sat May 12 08:51:39 2018] dvb-usb: Hauppauge Nova-T 500 Dual DVB-T successfully initialized and connected.
[Sat May 12 08:51:39 2018] usbcore: registered new interface driver dvb_usb_dib0700
[Sat May 12 08:52:07 2018] rfkill: input handler disabled
[Sat May 12 10:00:30 2018] ehci-pci 0000:03:00.2: HC died; cleaning up
[Sat May 12 10:00:30 2018] usb 3-1: USB disconnect, device number 2
[Sat May 12 10:00:30 2018] mt2060 I2C write failed
[Sat May 12 10:04:03 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:04:03 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:04:03 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:04:03 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:04:03 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:04:03 2018] Call Trace:
[Sat May 12 10:04:03 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:04:03 2018]  schedule+0x2c/0x80
[Sat May 12 10:04:03 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:04:03 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:04:03 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:04:03 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:04:03 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:04:03 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:04:03 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:04:03 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:04:03 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:04:03 2018]  device_del+0x13d/0x360
[Sat May 12 10:04:03 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:04:03 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:04:03 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:04:03 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:04:03 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:04:03 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:04:03 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:04:03 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:04:03 2018]  worker_thread+0x32/0x410
[Sat May 12 10:04:03 2018]  kthread+0x121/0x140
[Sat May 12 10:04:03 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:04:03 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:04:03 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:04:59 2018] mt2060 I2C write failed
[Sat May 12 10:08:05 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:08:05 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:08:05 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:08:05 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:08:05 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:08:05 2018] Call Trace:
[Sat May 12 10:08:05 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:08:05 2018]  schedule+0x2c/0x80
[Sat May 12 10:08:05 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:08:05 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:08:05 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:08:05 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:08:05 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:08:05 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:08:05 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:08:05 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:08:05 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:08:05 2018]  device_del+0x13d/0x360
[Sat May 12 10:08:05 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:08:05 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:08:05 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:08:05 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:08:05 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:08:05 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:08:05 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:08:05 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:08:05 2018]  worker_thread+0x32/0x410
[Sat May 12 10:08:05 2018]  kthread+0x121/0x140
[Sat May 12 10:08:05 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:08:05 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:08:05 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:10:06 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:10:06 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:10:06 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:10:06 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:10:06 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:10:06 2018] Call Trace:
[Sat May 12 10:10:06 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:10:06 2018]  schedule+0x2c/0x80
[Sat May 12 10:10:06 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:10:06 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:10:06 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:10:06 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:10:06 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:10:06 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:10:06 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:10:06 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:10:06 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:10:06 2018]  device_del+0x13d/0x360
[Sat May 12 10:10:06 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:10:06 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:10:06 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:10:06 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:10:06 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:10:06 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:10:06 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:10:06 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:10:06 2018]  worker_thread+0x32/0x410
[Sat May 12 10:10:06 2018]  kthread+0x121/0x140
[Sat May 12 10:10:06 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:10:06 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:10:06 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:12:07 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:12:07 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:12:07 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:12:07 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:12:07 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:12:07 2018] Call Trace:
[Sat May 12 10:12:07 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:12:07 2018]  schedule+0x2c/0x80
[Sat May 12 10:12:07 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:12:07 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:12:07 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:12:07 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:12:07 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:12:07 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:12:07 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:12:07 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:12:07 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:12:07 2018]  device_del+0x13d/0x360
[Sat May 12 10:12:07 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:12:07 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:12:07 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:12:07 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:12:07 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:12:07 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:12:07 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:12:07 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:12:07 2018]  worker_thread+0x32/0x410
[Sat May 12 10:12:07 2018]  kthread+0x121/0x140
[Sat May 12 10:12:07 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:12:07 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:12:07 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:14:08 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:14:08 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:14:08 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:14:08 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:14:08 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:14:08 2018] Call Trace:
[Sat May 12 10:14:08 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:14:08 2018]  schedule+0x2c/0x80
[Sat May 12 10:14:08 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:14:08 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:14:08 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:14:08 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:14:08 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:14:08 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:14:08 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:14:08 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:14:08 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:14:08 2018]  device_del+0x13d/0x360
[Sat May 12 10:14:08 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:14:08 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:14:08 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:14:08 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:14:08 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:14:08 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:14:08 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:14:08 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:14:08 2018]  worker_thread+0x32/0x410
[Sat May 12 10:14:08 2018]  kthread+0x121/0x140
[Sat May 12 10:14:08 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:14:08 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:14:08 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:16:08 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:16:08 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:16:08 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:16:08 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:16:08 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:16:08 2018] Call Trace:
[Sat May 12 10:16:08 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:16:08 2018]  schedule+0x2c/0x80
[Sat May 12 10:16:08 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:16:08 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:16:08 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:16:08 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:16:08 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:16:08 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:16:08 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:16:08 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:16:08 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:16:08 2018]  device_del+0x13d/0x360
[Sat May 12 10:16:08 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:16:08 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:16:08 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:16:08 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:16:08 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:16:08 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:16:08 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:16:08 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:16:08 2018]  worker_thread+0x32/0x410
[Sat May 12 10:16:08 2018]  kthread+0x121/0x140
[Sat May 12 10:16:08 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:16:08 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:16:08 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:18:09 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:18:09 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:18:09 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:18:09 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:18:09 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:18:09 2018] Call Trace:
[Sat May 12 10:18:09 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:18:09 2018]  schedule+0x2c/0x80
[Sat May 12 10:18:09 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:18:09 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:18:09 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:18:09 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:18:09 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:18:09 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:18:09 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:18:09 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:18:09 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:18:09 2018]  device_del+0x13d/0x360
[Sat May 12 10:18:09 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:18:09 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:18:09 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:18:09 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:18:09 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:18:09 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:18:09 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:18:09 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:18:09 2018]  worker_thread+0x32/0x410
[Sat May 12 10:18:09 2018]  kthread+0x121/0x140
[Sat May 12 10:18:09 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:18:09 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:18:09 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:20:10 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:20:10 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:20:10 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:20:10 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:20:10 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:20:10 2018] Call Trace:
[Sat May 12 10:20:10 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:20:10 2018]  schedule+0x2c/0x80
[Sat May 12 10:20:10 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:20:10 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:20:10 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:20:10 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:20:10 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:20:10 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:20:10 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:20:10 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:20:10 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:20:10 2018]  device_del+0x13d/0x360
[Sat May 12 10:20:10 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:20:10 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:20:10 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:20:10 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:20:10 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:20:10 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:20:10 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:20:10 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:20:10 2018]  worker_thread+0x32/0x410
[Sat May 12 10:20:10 2018]  kthread+0x121/0x140
[Sat May 12 10:20:10 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:20:10 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:20:10 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:22:11 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:22:11 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:22:11 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:22:11 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:22:11 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:22:11 2018] Call Trace:
[Sat May 12 10:22:11 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:22:11 2018]  schedule+0x2c/0x80
[Sat May 12 10:22:11 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:22:11 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:22:11 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:22:11 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:22:11 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:22:11 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:22:11 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:22:11 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:22:11 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:22:11 2018]  device_del+0x13d/0x360
[Sat May 12 10:22:11 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:22:11 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:22:11 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:22:11 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:22:11 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:22:11 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:22:11 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:22:11 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:22:11 2018]  worker_thread+0x32/0x410
[Sat May 12 10:22:11 2018]  kthread+0x121/0x140
[Sat May 12 10:22:11 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:22:11 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:22:11 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:24:12 2018] INFO: task kworker/6:2:172 blocked for more than 120 seconds.
[Sat May 12 10:24:12 2018]       Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 10:24:12 2018] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Sat May 12 10:24:12 2018] kworker/6:2     D    0   172      2 0x80000000
[Sat May 12 10:24:12 2018] Workqueue: usb_hub_wq hub_event
[Sat May 12 10:24:12 2018] Call Trace:
[Sat May 12 10:24:12 2018]  __schedule+0x297/0x8b0
[Sat May 12 10:24:12 2018]  schedule+0x2c/0x80
[Sat May 12 10:24:12 2018]  dvb_dmxdev_release+0xfa/0x130 [dvb_core]
[Sat May 12 10:24:12 2018]  ? wait_woken+0x80/0x80
[Sat May 12 10:24:12 2018]  dvb_usb_adapter_dvb_exit+0x49/0x70 [dvb_usb]
[Sat May 12 10:24:12 2018]  dvb_usb_exit+0x41/0xb0 [dvb_usb]
[Sat May 12 10:24:12 2018]  dvb_usb_device_exit+0x3f/0x60 [dvb_usb]
[Sat May 12 10:24:12 2018]  usb_unbind_interface+0x77/0x290
[Sat May 12 10:24:12 2018]  device_release_driver_internal+0x15b/0x220
[Sat May 12 10:24:12 2018]  device_release_driver+0x12/0x20
[Sat May 12 10:24:12 2018]  bus_remove_device+0xec/0x160
[Sat May 12 10:24:12 2018]  device_del+0x13d/0x360
[Sat May 12 10:24:12 2018]  ? usb_remove_ep_devs+0x1f/0x30
[Sat May 12 10:24:12 2018]  usb_disable_device+0x9f/0x270
[Sat May 12 10:24:12 2018]  usb_disconnect+0xc6/0x270
[Sat May 12 10:24:12 2018]  ? update_load_avg+0x57f/0x6e0
[Sat May 12 10:24:12 2018]  hub_quiesce+0x48/0xa0
[Sat May 12 10:24:12 2018]  hub_event+0xfb/0xb10
[Sat May 12 10:24:12 2018]  ? __switch_to+0xad/0x500
[Sat May 12 10:24:12 2018]  process_one_work+0x1de/0x410
[Sat May 12 10:24:12 2018]  worker_thread+0x32/0x410
[Sat May 12 10:24:12 2018]  kthread+0x121/0x140
[Sat May 12 10:24:12 2018]  ? process_one_work+0x410/0x410
[Sat May 12 10:24:12 2018]  ? kthread_create_worker_on_cpu+0x70/0x70
[Sat May 12 10:24:12 2018]  ret_from_fork+0x35/0x40
[Sat May 12 10:26:18 2018] perf: interrupt took too long (2508 > 2500), lowering kernel.perf_event_max_sample_rate to 79500
[Sat May 12 10:59:59 2018] dvb-usb: Hauppauge Nova-T 500 Dual DVB-T successfully deinitialized and disconnected.
[Sat May 12 11:04:59 2018] ------------[ cut here ]------------
[Sat May 12 11:04:59 2018] sysfs group 'power' not found for kobject 'i2c-13'
[Sat May 12 11:04:59 2018] WARNING: CPU: 6 PID: 1448 at /build/linux-5s7Xkn/linux-4.15.0/fs/sysfs/group.c:237 sysfs_remove_group+0x80/0x90
[Sat May 12 11:04:59 2018] Modules linked in: rc_dib0700_rc5 mt2060 snd_hda_codec_hdmi snd_hda_codec_via snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal dvb_usb_dib0700 intel_powerclamp coretemp dib7000m kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc dib0090 snd_hda_intel dib0070 snd_hda_codec dib3000mc snd_hda_core dibx000_common snd_hwdep snd_pcm snd_seq_midi dvb_usb snd_seq_midi_event snd_rawmidi dvb_core aesni_intel snd_seq aes_x86_64 crypto_simd rc_core glue_helper cryptd intel_cstate intel_rapl_perf input_leds joydev snd_seq_device serio_raw snd_timer lpc_ich snd soundcore mei_me mei shpchp ie31200_edac mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c
[Sat May 12 11:04:59 2018]  raid1 multipath linear raid0 hid_generic i915 i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt atl1c fb_sys_fops usbhid drm pata_acpi hid video
[Sat May 12 11:04:59 2018] CPU: 6 PID: 1448 Comm: TVRecEvent Not tainted 4.15.0-20-generic #21-Ubuntu
[Sat May 12 11:04:59 2018] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77-D3H, BIOS F18 08/21/2012
[Sat May 12 11:04:59 2018] RIP: 0010:sysfs_remove_group+0x80/0x90
[Sat May 12 11:04:59 2018] RSP: 0018:ffffb029432a7bc0 EFLAGS: 00010282
[Sat May 12 11:04:59 2018] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000006

[dualboot]

To be honest I've given up and re-built the system with 16.04LTS and it all worked OK - of course it could be the clean install, or it could be the version.